History in brief:
Initiator and responsible: Baltzar von Platen
Year of construction: 1810-1832.
Cost: Nine million riksdaler, which corresponds to approximately SEK 12.3 billion (SEK) in 1995 monetary value.
Staff: 58,000 indelta soldiers took part in the work and did approximately seven million days' work. A day's work consisted of twelve hours. The demanding digging was mainly carried out by hand.